CRYSTENGCOMM
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2019
·Vol. 21
·期 41
·6186-6195
·
IF 3.382
Qian-Qian Liu,Ke-Fen Yue,Xian-Jun Weng,Yao-Yu Wang
A novel two-dimensional Cd-based metal–organic framework, {[Cd(Hcpnc)(DMF)]·DMF·2H2O}n (Cd-MOF) has been synthesized successfully under solvothermal conditions by utilizing a multifunctional N,O-building block ligand, 2-(2,5-dicarboxylphenyl)nicotinic acid (H3cpnc), which is a new and virtually unexplored multifunctional pyridine-tricarboxylic building block. The product was isolated as a stable crystalline solid and was fully characterized by IR spectroscopy, elemental analyses, thermogravimetry and differential scanning calorimetry, powder X-ray diffraction, single-crystal X-ray diffraction analyses, and X-ray photoelectron spectroscopy. The solid-state luminescence properties of the Cd-MOF were studied at ambient temperature. The compound shows high selectivity and sensitivity for Cu2+ ions and nitrobenzene by the luminescence quenching behavior with excellent repeatability. Additionally, the Cd-MOF exhibits an excellent specific capacitance of 321 F g−1 at 0.5 A g−1 and it still retains 95.2% of the original capacitance after 1000 cycles. Therefore, the Cd-MOF as a kind of bifunctional material will have broad application prospects in luminescence detection and supercapacitors.
研究领域:
材料科学
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化学
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DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Wangfei Yu,Guannan Wang,Huizhi Chen,Honglei Mu,Ben Niu,Yanchao Han,Lishu Wang,Hangjun Chen,Haiyan Gao
To address the poor hydrolytic stability of CD-MOF in food applications, CD-MOF loaded with thymol (TCDM) was prepared and filled into a pectin (PEC)/sodium alginate (SA) substrate with the aid of zein to obtain a thymol-CD-MOF/zein-PEC-SA (TCDM/ZPS) polymer film. Characterization revealed that zein-PEC/SA (ZPS) protected TCDM by forming amphiphilic microspheres. TCDM was able to exist stably in the hydrophilic polysaccharide substrate and achieve a long-term slow release over 336 h. Besides, environmental humidity could also be used as a switch for regulating the thymol release rate, which was consistent with the first-order release model (R 2 > 0.99). TCDM and TCDM/ZPS showed excellent antimicrobial effects against E. coli , S. aureus , and B. cinerea , the most common fungi in plant-based foods. The preservation experiment maintained the quality of strawberry and Agaricus bisporus mushroom. This strategy holds the potential to broaden the application scope and enhance the utility of CD-MOF in food preservation.
研究领域:
食品科学
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材料科学
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微生物学
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DOI
PubMed
高影响因子
ANALYST
·
2019
·Vol. 144
·期 8
·2656-2661
·
IF 4.019
Pengcheng Xing,Di Wu,Jingshuai Chen,Jiming Song,Changjie Mao,Yuanhao Gao,Helin Niu
Recently, the pollution and damage caused by antibiotics in water have aroused serious concerns. In this situation, it is extremely important to develop a highly effective approach to detect antibiotics in water. In this contribution, we built a Cd-MOF material with stable fluorescence properties, using bbi = 1,4-bis(2-methyl-imidazol-1-yl)butane and H2L = 1,2-phenylenediacetic acid as organic ligands and Cd(NO3)2·4H2O as the metal node. The highly selective response of this MOF probe to ceftriaxone sodium (an antibiotic) can reach up to the ppb level in water, along with a fast response time, acid and alkali resistance, and anti-interference ability.
研究领域:
环境科学
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分析化学
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DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2024
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IF 10.7
Wenqian Nong,Honglin Luo,Gang Wang,Qicong Chen,Xiaosu Zou,Weiwei Miao,Jun Wu,Weiliang Guan,Shenhong Qu
The development of safe, environmentally friendly, edible antimicrobial packaging films represents a promising alternative to conventional plastic packaging for reducing spoilage and extending the shelf life of fresh food. Here, we propose a novel strategy to construct edible β-CD-MOF/carvacrol@zein (BCCZ) composite films by intertwining β-CD-MOF loaded with the antimicrobial essential oil carvacrol, and zein. The resulting BCCZ films exhibit high humidity-triggered, long-lasting bactericidal efficacy, effective fruit preservation, and excellent biosafety. Characterization revealed that BCCZ films possess a compact texture, hydrophilic surface, low water vapor permeability, and high humidity sensitivity. Additionally, this film act as a “storehouse” for carvacrol, enabling humidity-controlled release (96.3% release at 100% RH and only 12.0% at 43% RH on day 7). BCCZ film effectively inhibited Gram-positive Staphylococcus aureus , Gram-negative Escherichia coli , and fungi ( Botrytis cinerea ) through the release of liquid-phase and vapor-phase carvacrols under both direct contact and indirect contact conditions in high humidity. Owing to the film's humidity-triggered, long-term release of carvacrol, strawberries packed in BCCZ films maintained their freshness and appearance significantly better after seven days of storage at 21 °C. This work provides valuable insights and holds promise for the design and commercial application of safe, environmentally friendly freshness-preserving packaging films.
研究领域:
食品科学
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材料科学
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生物技术
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微生物学
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包装工程
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产品关联
DOI
PubMed
高影响因子
BIOMACROMOLECULES
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2024
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IF 5.5
Danyu Lv,Wanjun He,Wei Liu,Yuqiang Cheng,Yan Cui,Xiujuan Zhou,Yanwen Xue,Siming Yu,Ningjin Zhang,Hecheng Meng,Yongguang Guan,Jian-He Sun,Xian-Ming Shi
The γ-cyclodextrin (γ-CD) metal–organic frameworks (CD-MOF-1) consist of γ-CD and potassium (K+) ions through coordinating an eight-coordinated K+ ion with two C5-linked oxygen and C6-linked hydroxyl (C5–O/C6–OH) groups in the primary faces of adjacent γ-CD units and two C2- and C3-linked hydroxyl (C2–OH/C3–OH) groups in the secondary faces. Herein, we found polysaccharide gels with only C2–OH/C3–OH or C5–O/C6–OH groups in pyranoid rings can form four-coordinated K+ ions and then coordinate γ-CD in a KOH solution for CD-MOF-1 growth. Exposure of C2–OH/C3–OH or C5–O/C6–OH groups in polysaccharide gels is important to form active four-coordinated K+ ions. Mechanism supporting this work is that four-coordinated K+ ion sites are first formed after coordinating C2–OH/C3–OH groups in pectin and then coordinating C5–O/C6–OH groups in the primary faces of γ-CD units. Alternatively, four-coordinated K+ ions with C5–O/C6–OH groups in chitosan can coordinate the C2–OH/C3–OH groups in the secondary faces of γ-CD units. Mechanism of CD-MOF-1 growing on pectin and chitosan gels through the proposed four-coordinated K+ ions is also universally applicable to other polysaccharide gels with similar C2–OH/C3–OH or C5–O/C6–OH groups such as alginate gel. Based on this mechanism, we developed pectin and chitosan gel-based CD-MOF-1 composites and exemplified applications of them in antibacterial and organic dye removal. To help future research and applications of this mechanism, we share our theoretical assumption for further investigations that any matrices with an ortho-hydroxyl carbon chain or ortho-hydroxyl ether structures may form four-coordinated K+ ions for CD-MOF-1 growth. The proposed mechanism will broaden the development of novel CD-MOF-1 composites in various fields.
研究领域:
材料科学
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化学
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生物材料
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环境科学
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DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2018
·Vol. 93
·期 10
·2898-2905
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IF 2.587
Le Chen,Dan-Dan Zhu,Guo-Jian Ji,Sheng Yuan,Jun-Feng Qian,Ming-Yang He,Qun Chen,Zhi-Hui Zhang
Background Metal−organic frameworks (MOFs) are energy-efficient adsorbents for separating industrial chemical feedstocks. A type of MOF containing an extended porous network of γ-cyclodextrin (γ-CD) and alkali metal salts, CD-MOF, has potential applications in adsorption separation processes in the petrochemical industry. This study aims to present the adsorption efficiency of CD-MOF-1 in separating xylene regioisomers. Results The adsorption separation of xylene regioisomers on layered CD-MOF-1 microcrystals was studied using batch vapor-phase adsorption and liquid-phase breakthrough adsorption. CD-MOF-1 showed preferable adsorption of o -xylene over the other two isomers, with adsorption strength in the order o -xylene ( o X) > m -xylene ( m X) > p -xylene ( p X). With increased temperature, high adsorption capacities of o X and m X over p X were detected. However, this also resulted in a decrease of the separation factors of o X/ p X and m X/ p X. Conclusion The high resolution and large separation factors for o X/ p X and m X/ p X make CD-MOF-1 an efficient and reliable alternative adsorbent to the isolation protocols for xylene isomers currently used in the petrochemical industry. © 2018 Society of Chemical Industry
研究领域:
化学工程
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材料科学
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石油化工
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DOI
高影响因子
MICROCHEMICAL JOURNAL
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2024
·
IF 4.9
Rui Liu,Xin Zhang,Ri-jia Liu,Yuan Sun,Bin-qiao Ren
In this study, we created a brand-new g-C 3 N 4 -MWCNTs/Ag/β-CD-MOF electrode that can be used as a platform for the electrochemical sensing of Rutin (RT). The g-C 3 N 4 -MWCNTs/Ag/β-CD-MOF composite was synthesized via calcination treatment and electrodeposition, coupled with hydrothermal reaction. This composite could appreciably enlarge the electrochemically active surface area of the as-prepared sensor to promote electron transfer and result in the enhanced response signals.With the assistance of differential pulse voltammetry (DPV) and cyclic voltammetry (CV), the electrochemical performance of sensor can be greatly enhanced. Under these optimum conditions, the designed electrochemical sensor was able to sense RT at the lower detection limit (LOD) of 0.69 nM (S/N = 3) with a wider range of 5–500 nM and showed high sensitivity of 1.97 μA . nM −1. cm −2 at room temperature. Additionally, the selective investigation on RT was performed with the related interfering molecules, and the g-C 3 N 4 -MWCNTs/Ag/β-CD-MOF/GCE showed decent stability and reproducibility. The real-time application of the modified electrode for RT detection was monitored in both pharmaceutical and serum samples with the satisfactory recovery. Overall, this research contributes to the field of the electroanalytical sensing and offers the potential applications in the drug monitoring.
研究领域:
分析化学
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药物监测
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生物医学工程
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DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 16
·3873
·
IF 4.2
Fuhua Wei,Xue Gong,Qinhui Ren,Hongliang Chen,Yutao Zhang,Zhao Liang
In this study, Co/Cd-MOFs were synthesized via a solvothermal method. The resulting material was subjected to calcination at 900 °C for 2 h and characterized using FT-IR, XRD, and SEM techniques to assess its efficacy in moxifloxacin removal. The experimental findings revealed that the maximum adsorption capacity of Co/Cd-MOFs for moxifloxacin was observed at 350.4 mg/g within a 5 h timeframe. Furthermore, the analysis based on the pseudo-second-order kinetic model demonstrated that the adsorption process adhered to this specific model. Additionally, the adsorption isotherm analysis indicated that Freundlich multilayer adsorption provided the best description of the interaction between moxifloxacin and the Co/Cd-MOF material. These experimental and theoretical results collectively suggest that employing Co/Cd-MOFs as adsorbents holds promise for wastewater treatment applications.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Qian Ye,Jin Li,Yinyin Huang,Hanbin Wu,Yilin Li,Bin Yan
Due to their unique properties, the efficient separation of racemic mixtures remains a great challenge. Recently, membrane separation has been demonstrated as a promising chiral separation technique with the advantages of continuous operation, high throughput, and cost effectiveness. In this work, a cyclodextrin-metal-organic framework (CD-MOF) was prepared and then composited with polyvinylidene fluoride (PVDF) polymer by the phase inversion via immersion precipitation method to form a CD-MOF/PVDF composite membrane for chiral amino acid separation for the first time. The composite membranes prepared under different conditions were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) thermogravimetric analysis (TGA)and differential scanning calorimetry (DSC). The effects of preparation conditions including CD-MOF load, polymer concentration, and casting solution temperature on the hydrophilicity, water flux , bovine serum albumin (BSA) rejection and chiral separation performance of the membrane were investigated. It is found that the composite membrane (V-5%−12) prepared with the CD-MOF load of 5%, polymer concentration of 12%, and casting solution of 70 ℃ shows the best performance with the water flux of 466.4 L/m 2 ∙h, BSA rejection rate of 24.3% and stable 100% separation efficiency for phenylalanine (Phe) enantiomers for 4 h. The interaction energies between the CD-MOF and D -Phe and L -Phe were calculated using the Gaussian 09 program package and the chiral separation mechanism of the composite membrane was proposed at the molecular level. Our work demonstrates great development potentials of the CD-MOF/PVDF composite membrane in the chiral separation of drugs.
研究领域:
材料科学
·
生物化学
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产品关联
DOI
高影响因子
DYES AND PIGMENTS
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2026
·
IF 3.9
Qiu Lv,Dan Ni Luo,Qing Lin Guan,Feng Ying Bai,Yong Heng Xing,Guo Hui Li
A novel 3D porous Cd-MOF was hydrothermally synthesized from a cyclotriphosphazene-based organic linker (H 12 DPCP). • The luminescent Cd-MOF exhibits contrasting turn-off/turn-on responses toward hazardous ions (UO 2 2+ , Th 4+ , and Cr 2 O 7 2− ) and pesticide molecules (fenoxaprop-p- ethyl and dicamba), with low detection limits. • Mechanistic studies reveal that the quenching is driven by competitive absorption, while the enhancement arises from photoinduced electron transfer. A cadmium-based metal-organic framework (denoted as Cd-DPCP) with a three-dimensional porous structure was successfully designed and synthesized using hexakis(3,5-dicarboxylatephenyloxy)-cyclotriphosphazene (H 12 DPCP) as the organic linker and Cd(NO 3 ) 2 ‧4H 2 O as the metal source. Notably, Cd-DPCP exhibits excellent multifunctional luminescent sensing performance, capable of efficiently detecting harmful ions (UO 2 2+ , Th 4+ , and Cr 2 O 7 2− ) and pesticide molecules with high reusability rates. The fluorescence response mechanism was systematically investigated through powder X-ray diffraction, ultraviolet-visible absorption and fluorescence spectroscopy, together with theoretical calculations performed using Gaussian. Experimental results reveal that the fluorescence quenching of Cd-DPCP toward harmful ions is dominated by competitive absorption, whereas its fluorescence enhancement in the presence of pesticide molecules is primarily attributed to photoinduced electron transfer. These findings suggest that Cd-DPCP holds great promise as a multifunctional luminescent sensor for detecting hazardous substances in environments. This study successfully synthesized a three-dimensional porous Cd-MOF material via a hydrothermal method. Based on its excellent fluorescence properties, the material enables fluorescence quenching detection towards hazardous metal ions (UO 2 2+ , Th 4+ , Cr 2 O 7 2− ) and fluorescence enhancement detection towards pesticide molecules, demonstrating dual-mode sensing functionality with high selectivity and sensitivity. Download: Download high-res image (323KB) Download: Download full-size image
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DOI
高影响因子
FOOD CHEMISTRY
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2025
·
IF 9.8
Xuan Wang,Xu Meng,Tao Liang,Jiachun Song,Kamal Eldin Afaf,Hong Duan,Lingyan Zheng,Gang Chen
γ-Cyclodextrin (γ-CD) is one of the most widely used materials for encapsulating hydrophobic functional molecules due to its distinctive structural features, especially an internal hydrophobic cavity surrounded by external hydrophilic surface. However, its limited loading capacity, adsorption efficiency, and poor stability hinder its broader applications. To address this issue, γ-cyclodextrin-based metal-organic frameworks (γ-CD-MOFs) was formed by anchoring potassium ions with γ-CD through hydrothermal self-assembly. After loading different hydrophobic small molecule active substances, a multifunctional composite coating was prepared by embedding them into the chitosan (CS) matrix. The release kinetic model analysis confirmed that the release behavior of Cinnamaldehyde (Cia), 2-methoxycinamaldehyde (2-MCA), and Curcumin (Cur) from γ-CD-MOFs conformed to the Ritger-Peppas equation. Compared with CS, CS/γ-CD-MOF@Cia has a strong inhibitory effect on E. coli O157: H7 and S. aureus . Sprayed on green grapes, the shelf life is extended to 21 days. CS/γ-CD-MOF@2-MCA can significantly reduce the spoilage of milk caused by photooxidation. Furthermore, compared with CS, the oxidation and browning of banana peels were effectively delayed by CS/γ-CD-MOF@Cur, and complete blackening is not observed even after 11 days of storage. By combining the advantages of chitosan and γ-CD-MOF, the active molecules with different functions were encapsulated on the platform of γ-CD-MOF to achieve antibacterial, light-blocking, and antioxidant effects on food. The novel functional coating materials presented in this work offer a promising approach to effectively prolonging the shelf life of fresh foods products.
研究领域:
食品科学与技术
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材料科学
·
纳米技术
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活性包装
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控释
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产品关联
DOI
PubMed
高影响因子
ChemistrySelect
·
2025
·Vol. 10
·期 24
·e01425
·
IF 2
Fuhua Wei,Wei Shang,Qinhui Ren,Qin Zhang,Min Li,Diaodiao Zhang,Lanyan Tian,Zhao Liang
Graphical Cd-MOF-based carbon materials were successfully synthesized. The characterized materials were then utilized to investigate the removal efficiency of tetracycline hydrochloride. From these experiments, it can be concluded that Cd-MOF-based carbon materials exhibit a maximum adsorption capacity for tetracycline hydrochloride at pH 4 within five hours reaching up to an impressive value of 390.6 mg/g. In this study, carbon materials derived from cadmium metal–organic frameworks (Cd-MOFs) were successfully synthesized. The prepared Cd-MOFs materials were calcined (Cd-MOF-based carbon materials) at 800 °C, and its structural characteristics were systematically analyzed via Fourier-transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy techniques. We assessed the effectiveness of these carbon materials in removing tetracycline (TC) hydrochloride. The results revealed that the adsorption process followed a second-order kinetic model and the Freundlich isotherm. Notably, the carbon materials achieved a maximum TC removal efficiency of 93.04% within 5 h. At pH of 4, the materials exhibited an excellent TC adsorption capacity of 390.6 mg/g. These achievements of Cd-MOF-based carbon materials demonstrate promising potential application values for future environmental applications.
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DOI
高影响因子
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